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gsd-mvp-phase

Convert a GSD phase into an MVP vertical slice with SPIDR splitting.

4|Updated Apr 11, 2026
Search Tags:#roadmap#mvp#phase planning#user story#gsd#spidr
One-click install
npx skills add https://github.com/electroheadfx/efx-mux --skill gsd-mvp-phase-electroheadfx
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: gsd-mvp-phase
Source: https://github.com/electroheadfx/efx-mux/tree/main/.codex/skills/gsd-mvp-phase
Command: npx skills add https://github.com/electroheadfx/efx-mux --skill gsd-mvp-phase-electroheadfx

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This Skill helps you convert an existing phase into a vertical MVP slice so planning stays focused on one user outcome instead of a broad feature backlog.

Core Features & Use Cases

  • User story capture: Gathers a structured As a / I want to / So that story for the phase.
  • SPIDR splitting check: Evaluates whether the story is too large and should be split across spike, paths, interfaces, data, and rules.
  • Roadmap update and delegation: Writes the phase to MVP mode in ROADMAP.md and then hands off to the phase-planning workflow.

Quick Start

Use the gsd-mvp-phase skill to convert phase 2 into MVP mode for the user story "As a developer, I want to compare terminal sessions side by side so that I can debug faster."

Frequently Asked Questions about gsd-mvp-phase

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I convert a roadmap phase into an MVP slice?▼

Converting a roadmap phase into an MVP slice requires capturing a structured user story, validating it through SPIDR splitting, updating ROADMAP.md, and delegating to the phase planning workflow for detailed execution.

What is SPIDR splitting for user stories?▼

SPIDR splitting evaluates whether a user story is too large for an MVP slice by checking it across spike, paths, interfaces, data, and rules to ensure focused vertical delivery.

How do I structure a user story for MVP phase planning?▼

Structure your user story for MVP phase planning using the As a, I want to, So that format to capture the user outcome, which the skill then validates before updating the roadmap.

Does MVP phase planning require an existing roadmap phase?▼

Yes, MVP phase planning requires an existing roadmap phase. The skill performs a roadmap phase existence check and relies on guarded user input handling before annotating MVP mode.

When should I split a phase into a vertical MVP slice instead of a broad backlog?▼

Split a phase into a vertical MVP slice when planning must focus on a single user outcome rather than a broad feature backlog, ensuring the slice delivers end-to-end value.

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